“Everything changes and nothing stands still.”
As quoted by Plato in Cratylus, 402a

“It is harder to fight against pleasure than against anger.”
As quoted by Aristotle in Nicomachean Ethics, Book II (1105a)

“Time is a game played beautifully by children.”
As quoted in Fragments (2001) translated by Brooks Haxton

“War is the father and king of all, and has produced some as gods and some as men, and has made some slaves and some free.”
Hippolytus, Ref. haer. ix. 9 (Fragment 53). G. T. W. Patrick, 1889

“Though wisdom is common, yet the many live as if they had a wisdom of their own.”
Fragment 2, as quoted in Against the Mathematicians by Sextus Empiricus

“Much learning does not teach understanding.”
Fragment 40

“The road up and the road down is one and the same.”
Fragment 60

“You cannot step twice into the same rivers.”
Fragment 91. Plutarch, On the EI at Delphi

“Dogs, also, bark at what they do not know.”
Fragment 97

“It is better to conceal ignorance than to expose it.”
Fragment 109

“Character is destiny.”
Fragment 119